src/w32heap.h

   1 /* Heap management routines (including unexec) for GNU Emacs on Windows NT.
   2    Copyright (C) 1994 Free Software Foundation, Inc.
   3
   4    This file is part of GNU Emacs.
   5
   6    GNU Emacs is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by the
   8    Free Software Foundation; either version 2, or (at your option) any later
   9    version.
  10
  11    GNU Emacs is distributed in the hope that it will be useful, but WITHOUT
  12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14    more details.
  15
  16    You should have received a copy of the GNU General Public License along
  17    with GNU Emacs; see the file COPYING.  If not, write to the Free Software
  18    Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  19
  20    Geoff Voelker (voelker@cs.washington.edu)                         7-29-94
  21 */
  22
  23 #ifndef NTHEAP_H_
  24 #define NTHEAP_H_
  25
  26 #include <windows.h>
  27
  28 /*
  29  * Heap related stuff.
  30  */
  31 #define get_data_region_base()          (char *) 0x00030000
  32 #define get_reserved_heap_size()        (0x00d00000 - 0x00030000)
  33 #define get_committed_heap_size()       (get_data_end () - get_data_start ())
  34 #define get_heap_start()                get_data_start ()
  35 #define get_heap_end()                  get_data_end ()
  36 #define get_page_size()                 sysinfo_cache.dwPageSize
  37 #define get_allocation_unit()           sysinfo_cache.dwAllocationGranularity
  38 #define get_processor_type()            sysinfo_cache.dwProcessorType
  39 #define get_nt_major_version()          nt_major_version
  40 #define get_nt_minor_version()          nt_minor_version
  41
  42 extern unsigned char *get_data_start();
  43 extern unsigned char *get_data_end();
  44 extern unsigned long  data_region_size;
  45 extern SYSTEM_INFO    sysinfo_cache;
  46 extern BOOL           need_to_recreate_heap;
  47 extern int            nt_major_version;
  48 extern int            nt_minor_version;
  49
  50 /* Emulation of Unix sbrk().  */
  51 extern void *sbrk (unsigned long size);
  52
  53 /* Recreate the heap created during dumping.  */
  54 extern void recreate_heap (char *executable_path);
  55
  56 /* Round the heap to this size.  */
  57 extern void round_heap (unsigned long size);
  58
  59 /* Load in the dumped .bss section.  */
  60 extern void read_in_bss (char *name);
  61
  62 /* Map in the dumped heap.  */
  63 extern void map_in_heap (char *name);
  64
  65 /* Cache system info, e.g., the NT page size.  */
  66 extern void cache_system_info (void);
  67
  68 /* Round ADDRESS up to be aligned with ALIGN.  */
  69 extern unsigned char *round_to_next (unsigned char *address,
  70                                      unsigned long align);
  71
  72 #endif /* NTHEAP_H_ */